Because some tests or softwares can chmod'ed some files to make them
readonly, testnode should try to chmod the files to deletable state if
deleting them fail in the first place.

Add some bug reproduction tests for deletions of tempfiles and no longer
used software.

[erp5_notebook]: add workflow to notebook, add erp5_dms as dependency, load iodide notebook in notebook module, change indentation of gadget_officejs_jio_notebook.js, update security settings

this commit should fix random plus button not present issue when open sort editor
the reason is sort editor is opened before launcher call editor_panel.close()
so wait for page loaded before open sort editor

This hopefully fix the random issue of having test results not linked to
a project. Indeed, distributor/createTestResult was called in two different
times:
- by the testnode, with the project title
- by the runTestSuiteCommand, without the project title. This was
  not an issue most of the time, since the test result is already
  created. But if it was not there (like due to a cancelled test),
  a test result without project was created

erp5/tests/testERP5TestNode.py: Fix test_scalability_04_constructProfile. repository option is required for scalability test profile and it was added on commit 58d92a84.

erp5/tests/testERP5TestNode.py: Fix test_zzzz_scalability_19_xxxx. prepareFrontendMasterInstance was removed on commit 4048ab39.

erp5/util/testnode, scalability_test: Stop using a dummy frontend master and use host.vifib.net frontend with a valid SSL certificate instead. Always use https.

erp5/util/testnode: hosting subscription url was not updated once it was set. As a result, since testnode watched an old destroyed instance, the next test never started. Thus don't store hosting subscription url. It changes from time to time.

* erp5_core: allow to use Base_download from ERP5JS dialog
* erp5_base/dms* move Document_viewDownloadDialog into erp5_base
* erp5_base: add a dialog to download Image.
* erp5_web_renderjs_ui_test: test Dms download actions
* erp5_dms: allow to download original/converted documents from ERP5JS UI

erp5configurator: ConfiguratorItemMixin should not inherit Base class. Because of this wrong inheritance, configurator item classes did not work as Folder.